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post_install() { getent group mpd &>/dev/null || groupadd -r -g 45 mpd >/dev/null getent passwd mpd &>/dev/null || useradd -r -u 45 -g mpd -d /var/lib/mpd -s /bin/false -G audio mpd >/dev/null usr/bin/systemd-tmpfiles --create mpd.conf || true }